My RW blog is generating this code for my external link
a href=​"http:​/​/​www.spareair.com" rel=​"external">​small pony tank​​
so RW seems to be generating the recommended code from your reference link. Otherwise I am out of my depth trying to fix this…

Do you get external links to open in new window when you use this feature?

I’m having the same problem. I’m using the Blog Pop them that came with the program. Of fifty or so links, it seems that one of them only opens in an external windows, while all the rest open in the same window. All are checked “open in new window.”